Home / Standards / GB/T 44293-2024 GB/T 44293-2024 Active Image measurement method for numerical aperture of microscopic objective 显微物镜数值孔径图像式测量方法 Standard Type GBT ICS 31.260 CCS L50 Status 现行 Issue Date 2024-08-23 Implementation 2025-03-01 Responsible Dept 中国科学院 Drafting Unit N/A